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- Question
Under normal conditions using an ordinary cement, the period of removal of the form work, is :
Options- A. 7 days for beam soffits
- B. 14 days for bottom slabs of spans 4.6 m and more
- C. 21 days for bottom beams over 6 m spans
- D. 2 days for vertical sides of columns
- E. all the above.
- Correct Answer
- all the above.
- 1. The rock which is not calcareous, is :
Options- A. lime stone
- B. macl
- C. chalk
- D. laterite
- E. none of these. Discuss
- 2. M10 grade of concrete approximates
Options- A. 1 : 3 : 6 mix
- B. 1 : 1 : 2 mix
- C. 1 : 2 : 4 mix
- D. 1 : 1.5 : 3 mix
- E. none of these. Discuss
- 3. To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temperature between
Options- A. 1100° and 1200°C
- B. 1200° and 1300°C
- C. 1300° and 1400°C
- D. 1400° and 1500°C
- E. 1500° and 1600°C Discuss
- 4. The increased cohesiveness of concrete, makes it
Options- A. less liable to segregation
- B. more liable to segregation
- C. more liable to bleeding
- D. more liable for surface scaling in frosty weather
- E. none of these. Discuss
- 5. If 1500 g of water is required to have a cement paste 1875 g of normal consistency, the percentage of water is,
Options- A. 20%
- B. 25%
- C. 30%
- D. 35%
- E. 40% Discuss
- 6. The standard sand now a days used in India, is obtained from
Options- A. Jaipur (Rajasthan)
- B. Jullundur (Punjab)
- C. Hyderabad (Andhra Pradesh)
- D. Ennore (Madras)
- E. Cuttuck (Orissa). Discuss
- 7. Transport of concrete by pumps, is done for a distance of
Options- A. 100 m
- B. 200 m
- C. 300 m
- D. 400 m
- E. none of these. Discuss
- 8. An aggregate is said to be flaky if its least dimension is less than
Options- A. 1/5th of mean dimension
- B. 2/5th of mean dimension
- C. 3/5th of mean dimension
- D. 4/5th of mean dimension
- E. none of these. Discuss
- 9. Vicat's apparatus is used for
Options- A. fineness test
- B. consistency test
- C. setting time test
- D. soundness test
- E. compressive strength test. Discuss
- 10. To ensure constant moisture content in aggregates
Options- A. area of each aggregate pile should be large
- B. height of each aggregate pile should not exceed 1.50 m
- C. aggregate pile should be left for 24 hours before aggregates are used
- D. conical heaps of aggregates should be avoided to prevent moisture variation
- E. all the above. Discuss
Concrete Technology problems
Search Results
Correct Answer: laterite
Correct Answer: 1 : 3 : 6 mix
Correct Answer: 1400° and 1500°C
Correct Answer: less liable to segregation
Correct Answer: 25%
Correct Answer: Ennore (Madras)
Correct Answer: 400 m
Correct Answer: 3/5th of mean dimension
Correct Answer: consistency test
Correct Answer: all the above.
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